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Finding the Fourth Proportional to 28,617.60, 42,906.40 and 16,924.80

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Solution

The fourth proportional to 28,617.60, 42,906.40 and 16,924.80 is: 25,375.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,617.60 : 42,906.40 = 16,924.80 : x
  2. Step 2: Convert to fraction form
    28,617.60/42,906.40 = 16,924.80/x
  3. Step 3: Cross multiply
    28,617.60x = 42,906.40 × 16,924.80
  4. Step 4: Simplify right side
    28,617.60x = 726,182,238.72
  5. Step 5: Solve for x
    x = 726,182,238.72/28,617.60
  6. Step 6: Final answer
    x = 25,375.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.